If I may join this Swedish conversation...
There’s a third possibility for movement/non-movement when standing, too. You can be standing still – I mean trying to hold the best alignment you can find in that moment, while relaxing, but not intentionally allowing any small movements, waves, shifts, oscillations. And then sometimes the body moves/adjusts ‘by itself’, at least not with any conscious or volitional movement by the will. It’s a change in alignment, usually in the torso/spine. This can be a slower movement, maybe taking a few seconds, or a sudden adjustment; either smaller or bigger. To me it feels like someone else, or some big hand, suddenly moves me, making a correction, giving me the feeling: “whatever just did that, it wasn’t me. But now I’m standing better.” -- The slower adjustments feel the strangest, almost like someone else is giving me a gentle but firm correction.
In my personal experience, that doesn’t happen so often, but it appears in some phases of practice. It can be startling, but it also feels good.
Anyone else experience this sometimes?
PS. I don’t have time to watch the video, it’s more than half an hour, but if there’s anything in it which is relevant to what I just wrote, then I’d be grateful for a time reference.